All CRT-450 Test Inside Salesforce Questions

To notify the parent component from a child component when a button is clicked:

Option C: Create a custom event

Explanation: In Lightning Web Components, child components communicate with parent components by dispatching custom events.

Child Component:

// ChildComponent.js

handleClick() {

const nextEvent = new CustomEvent('next');

this.dispatchEvent(nextEvent);

}

Parent Component:

javascript

Copy code

// ParentComponent.js

handleNext() {

// Navigate to the next page

}

Universal Containers wants to prevent Opportunities from being edited once they reach the Closed/Won stage. To achieve this, the developer can use the following strategies:

Option A: Use a validation rule.

Correct Approach.

Explanation:

A validation rule can be created on the Opportunity object to prevent users from editing records when the Stage is Closed/Won.

The validation rule would evaluate whether the record's StageName is 'Closed Won' and, if so, display an error message when a user attempts to edit and save the record.

Example Validation Rule:

AND(

ISPICKVAL(StageName, 'Closed Won'),

ISCHANGED(ANYFIELD) // Replace ANYFIELD with specific fields if needed

)

Benefits:

Declarative Solution: No code required.

Consistent Enforcement: Applies across all user interfaces and API.

When a Lightning component needs to execute a complex SOQL query that joins two objects, and such queries are not supported directly in Lightning components, the solution is to use an Apex controller method.

Option C: Invoke an Apex class with the method annotated as @AuraEnabled to perform the query.

Correct Approach.

Explanation:

The Lightning component can call an Apex method annotated with @AuraEnabled.

The Apex method can perform the complex SOQL query and return the results to the component.